How can you express 499 to find the product 499×5 using mental math explain

So the answer would be 2495.

Step-by-step explanation:

We can write 499 as  500 - 1

Because we can easily multiply 500 to 5 compare to 499 to 5.

So product of 499 × 5 = (500 - 1) × 5

                                  = 500 × 5 - ( 1 × 5 = 5 )

                                  = 2500 - 5 = 2495

So the answer would be 2495.

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

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